Finding the Fourth Proportional to 91,709.70, 137,584.36 and 28,528.62
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Solution
The fourth proportional to 91,709.70, 137,584.36 and 28,528.62 is: 42,799.09
Step by Step Solution
- Step 1: Write the proportion equation
91,709.70 : 137,584.36 = 28,528.62 : x - Step 2: Convert to fraction form
91,709.70/137,584.36 = 28,528.62/x - Step 3: Cross multiply
91,709.70x = 137,584.36 × 28,528.62 - Step 4: Simplify right side
91,709.70x = 3,925,091,924.38 - Step 5: Solve for x
x = 3,925,091,924.38/91,709.70 - Step 6: Final answer
x = 42,799.09
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.